Naval destroyer-craft.



S. W. BARNABY.

NAVAL DESTROYER CRAFT. APPLICATION mum mm: 13, 1912.

1,054,490. Patented Feb.25,1913. 1

fig

MAW.

UNITED STATES PATENT OFFICE.

SYDNEY WALKER BARNABY, OF VVOOLSTON,'ENGLAND. ASSIGNOR T0 JOHN I.THORNY- CROFT & CO. LIMITED, AND SYDNEY WALKER BARNABY, BOTH OFWOOLSTON, ENG-- LAND.

I NAVAL DESTROYER-CRAFT.

Specification of Letters Patent.

Application filed June 13, 1912. Serial No. 703,472.

To all whom it may concern:

Be it known that I, SYDNEY \VALKER BARNABY, a subject of the King ofGreat Britain and Ireland, residing at \Voolston, in the county ofHunts, England. have invented an Improvement in Naval Destroyer Craft,of which the following is a specification.

As is well known, vessels such as battleships and passenger ships havebeen fitted with tank arrangements designed so that liquid containedtherein can be utilized to minimize rolling of the vessel.

I-Ieretofore it has been impracticable to apply anti-rolling tanks ofthis character to naval destroyer craft by reason of the additionalweight and consequent load imposed upon the vessel. Where, however, asin torpedo boat destroyers for example, liquid fuel is employed, it ispossible to make use of this liquid for the purpose referred to, and itis the object of the present invention to enable this to be done in aneffectual manner by arranging that the ordinary oil tanks which arecharged with oil for use in times of peace but, being above the waterline. would be emptied before going into action, shall constitute ananti-rolling tank, the oil in such tank being relied upon to secure therequired damping action at times of peace whereas in war times it is tobe replaced with water.

A part longitudinal section and a cross section of a torpedo boatdestroyer embodying the invent-ion are shown respectively in Figures 1and 2 of the accompanying drawin s.

is there shown,the anti-rolling tank comprises two longitudinalreservoirs a and 6, (usually called the peace oil tanks) which areconnected together at the bottom by a suitably constructed transversepassage 0, in a manner previously adopted in other classes of ships, toform an anti-rolling tank, the said reservoirs a and b and passagecbeing disposed above a separate fuel tank cl (usually called the waroil tank) located between say the boiler-room e and the engine room 1.The air space within the upper part of each of the reservoirs a and bconstituting the anti-rolling tank, may be placed in communication witheach other through a transverse passage 9 immediately beneath say theupper deck, the said passage being of a comparatively restricted crosssectional area and capable of being modified with the aid of a suitablevalve arrangement as heretofore. Conveniently, the valve arrangement maycomprise butterfly valves it upon a spindle l operated through worm andworm wheel gearing from the space Z: between the side reservoirs a andI), this space accommodating say the dynamo and store rooms. By thismeans the cross sectional area of the passage 7 can be readily alteredto adapt the combined tanks with liquid for both use as an antirollirgtank when charged with oil and when charged with water, the crosssectional area of the passage requiring to be considerably reduced whenthe tanks are charged with water as compared with the area required whenthey are charged with oil. in order to obtain the required dampingefi'ect in each case, the viscosity of the two liquids being verydifferent. Each side reservoir a and b may be fitted with a curved guideplate at serving to direct the liquid gradually to the outer side of thereservoir as the vessel rolls. The level of the liquid in thesereservoirs would usually be about halfway up to the upper deck.

In addition to the usual means for charging the reservoirs a and b andthe war tank (Z with oil fuel, represented as trunks n, 0 respectively,means, such as a valve 79 which can be controlled from the deck by thespindle '1' may be provided for permitting the contents of the connectedreservoirs a and b to be emptied into the tank d. A similar valve 8worked by a spindle t is provided for discharging the contents of thereservoirs a and 6 through the hull of the craft into the external sea.The connected reservoirs a and b can be charged with water by means of ahose in connection with the vessels fire service pump through the trunkn.

What I claim is 1. In a naval destroyer craft having a war oil tank inthe lower part of the vessel below the water line, the combination withpeace oil tanks arranged at the sides of the vessel above the waterlineand normally separate from the war oil tank and a transverse passageconnecting the peace oil tanks together thereby causing them to act asantirolling tanks, of means adapted to permit oil in the connected peaceoil tanks to be emptied into the war oil tank when the ves i sel is tobe brought into action and to be replaced with water. I

2. In a vnaval destroyer craft having a war oil tank in the lower partof the Vessel below the water line, the combination with,

peace-oil tanksar'ranged at the sides of the vessel above the water lineand normally. separate from the war oil tank'and a transversepassage-connecting the peace oil tanks together thereby causing them toact as antirolling tanks, of meansadapted to permit oil ,in-the'connected peace oil tanks to be ieid into thewar .oil tank when thevessel is to be broughtinto action and to be replaced with water, andmeans for discharging the water from the. eace oil tanks to the exteriorof the era when these tanks are to be again charged with oil.

3,111 a 'navalfdestroyer craft having a war oil tank in the" lowerpartof the vessel below the water line, the combination with peace oil tanksarranged at the sides of the vessel above the water. line, normally'separateifrom the war oil tank and connected by a lower transversepassage and'by a higher transverse passage of a more restriotedcharacter and the cross sectional.

area of which can be varied, of means adapted to permit oil in the peaceoil tanks to be emptied into the war oil tankjwhen the vessel is tofbebrought into action and to be.

replaced with water..

Lln a naval destroyerv craft having a v war oil tank in the lower partof the vessel below the Water line, the combination with peace oil tanksarranged at the sides of the vessel abovethe water line, normallyseparate from the war oil tank and connected higher transverse passageof a more restricted character and provided with a regulating Signed atthe American consulate, South- .ampton; England, "this fourth day ofJune SYDNEY WALKER BARNABY.

Witnesses:v

HARVEY J. BAvnRs'moK, CHARLES PACK.

by a lower transverse passage and by a

